What is the life time of tank which have printed only the year and month of production? But is not printed on, when is the FINAL DATE, as in Luxfer or Dye Air Tanks (approximatly have 15 or 20 years)...
Than you test it every 5 years and that's it, or otherwise?
I have at home Sly Pro Merc 1,1l 4500psi tank (only date (M & Y) of manufacturing), but it is not printed the final date. And also have Luxfer in which is everything clearly printed. This makes me a little confused.
Thanks for the answers.